Walters, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 12.7 °C (high). Annual precipitation averages 882.1 Millimeters. Walters is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -14.4 °C | -4.9 °C | 20.32 mm |
| February | -12.2 °C | -2.5 °C | 23.11 mm |
| March | -5.2 °C | 4.6 °C | 46.48 mm |
| April | 1.6 °C | 13.2 °C | 87.88 mm |
| May | 8.5 °C | 20.1 °C | 123.19 mm |
| June | 14.6 °C | 25.7 °C | 137.16 mm |
| July | 16.6 °C | 27.6 °C | 118.11 mm |
| August | 15 °C | 26.2 °C | 103.38 mm |
| September | 10.2 °C | 22.8 °C | 93.47 mm |
| October | 3 °C | 15.1 °C | 60.96 mm |
| November | -3.7 °C | 6.1 °C | 38.1 mm |
| December | -10.4 °C | -1.8 °C | 29.97 mm |
| Annual | 2 °C | 12.7 °C | 882.13 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |